Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. One or more non-transitory computer readable media (CRM) comprising instructions stored thereon that, when executed by one or more processors of a user equipment (UE), cause the UE to: decode an information element from a radio resource control (RRC) message, wherein the information element includes configuration information for one or more candidate beams for beam failure recovery in case of beam failure detection, and the configuration information includes a list of downlink reference signals (RSs) of the one or more candidate beams, detect, based on at least one downlink reference signal (RS), a beam failure of a first candidate beam of the one or more candidate beams in at least one of a plurality of active bandwidth parts (BWPs) based on a beam failure detection (BFD) counter associated with the at least one active BWP, and declare, upon detection, the beam failure, wherein a first downlink RS instance and a second downlink RS instance of the at least one downlink RS define a RS periodicity, and wherein a beam failure detection (BFD) period is less than the RS periodicity, and wherein the instructions cause the UE to detect the beam failure based on a quality of a downlink RS instance most recent to the BFD period when no downlink RS instance falls within the BFD period.
This invention relates to wireless communication systems, specifically beam failure recovery in 5G or similar networks. The problem addressed is ensuring reliable beam failure detection (BFD) and recovery when a user equipment (UE) loses communication with its serving beam. The solution involves configuring the UE with candidate beams for recovery and optimizing BFD timing to handle scenarios where reference signals (RS) are not perfectly aligned with BFD periods. The UE receives configuration information in a radio resource control (RRC) message, specifying candidate beams for recovery. This includes a list of downlink RSs associated with each candidate beam. The UE monitors these RSs to detect beam failures in active bandwidth parts (BWPs). A BFD counter tracks failures in each BWP. The RS instances define a periodicity, but the BFD period is shorter. If no RS instance falls within the BFD period, the UE uses the most recent RS instance to assess beam quality. This ensures timely detection even when RS transmissions are sparse. The UE declares a beam failure if the quality of the most recent RS instance meets failure criteria, triggering recovery procedures. This approach improves reliability in dynamic wireless environments where beam conditions fluctuate rapidly.
2. The one or more CRM of claim 1 , wherein the instructions are to further cause the UE to increment the BFD counter upon detection of an instance of the beam failure in the associated at least one active BWP.
This invention relates to wireless communication systems, specifically beam failure detection (BFD) in user equipment (UE) operating in a cellular network. The problem addressed is the need for accurate and efficient tracking of beam failures in active bandwidth parts (BWPs) to maintain reliable communication links. The invention involves a user equipment (UE) configured to monitor beam failures in one or more active bandwidth parts (BWPs) of a wireless communication system. The UE includes a processor and memory storing instructions that, when executed, cause the UE to detect instances of beam failure in an active BWP. Upon detecting such a failure, the UE increments a beam failure detection (BFD) counter. This counter is used to track the frequency and severity of beam failures, enabling the UE to trigger appropriate recovery mechanisms, such as beam failure recovery (BFR) procedures, when the counter exceeds a predefined threshold. The system ensures robust communication by dynamically adjusting to beam failures, which are common in high-frequency or millimeter-wave (mmWave) networks where beam alignment is critical. The invention improves reliability and reduces latency in wireless communications by providing a systematic way to monitor and respond to beam failures in active BWPs.
3. The one or more CRM of claim 2 , wherein the instructions are to further cause the UE to declare the beam failure upon the BFD counter reaching a predetermined maximum count.
A system and method for managing beam failure detection (BFD) in wireless communication networks, particularly in scenarios involving user equipment (UE) and network nodes like gNodeBs (gNBs). The invention addresses the challenge of efficiently detecting and declaring beam failures in millimeter-wave (mmWave) or other high-frequency communications where beam alignment is critical for reliable data transmission. The system includes a UE equipped with a beam failure detection (BFD) module that monitors the quality of communication beams between the UE and a network node. The BFD module tracks a BFD counter, which increments upon detecting beam quality degradation, such as failed beam recovery attempts or excessive error rates. When the BFD counter reaches a predetermined maximum count, the UE declares a beam failure, triggering a beam recovery procedure. This ensures timely detection and recovery of beam failures, maintaining communication stability. The system may also include a network node configured to assist in beam failure recovery by providing alternative beam configurations or retransmission requests. The invention improves reliability in high-frequency wireless communications by automating beam failure detection and recovery processes.
4. The one or more CRM of claim 3 , wherein the predetermined maximum count is included in the RRC message or another RRC message.
This invention relates to wireless communication systems, specifically to managing radio resource control (RRC) connections in cellular networks. The problem addressed is the need to efficiently control the number of RRC connections a user equipment (UE) can maintain with a network, particularly in scenarios where multiple connections are desirable but must be limited to prevent resource exhaustion or interference. The invention describes a system where a network node, such as a base station or core network element, transmits a radio resource control (RRC) message to a user device (UE). This message includes a predetermined maximum count, which specifies the highest number of RRC connections the UE is allowed to establish or maintain simultaneously. The UE receives this message and enforces the limit by refusing to initiate or sustain additional connections beyond the specified count. The maximum count can be included in the initial RRC message or in a subsequent RRC message, allowing dynamic adjustment based on network conditions or UE capabilities. This mechanism ensures efficient resource utilization while maintaining flexibility in connection management. The system may also involve additional logic to handle exceptions, such as emergency calls or high-priority services, where the limit may be temporarily relaxed.
5. The one or more CRM of claim 4 , wherein the predetermined maximum count is included in a second information element decoded from the RRC message or another RRC message.
In wireless communication systems, particularly in cellular networks, efficient management of radio resources is critical for maintaining reliable connectivity and optimizing network performance. A key challenge involves dynamically adjusting communication parameters to adapt to varying network conditions, such as signal strength, interference, and user mobility. One approach to address this involves configuring a user device with a predetermined maximum count of retransmissions for control messages, such as Radio Resource Control (RRC) messages, to balance reliability and resource usage. The invention relates to a system where a user device, such as a smartphone or IoT device, receives a maximum retransmission count for RRC messages from a network node, such as a base station. This count is included in a second information element within the RRC message or another RRC message. The user device uses this count to limit the number of retransmission attempts for control signaling, ensuring efficient use of radio resources while maintaining communication reliability. The system may also include additional features, such as dynamically adjusting the count based on network conditions or user device capabilities, and validating the count against predefined thresholds to prevent excessive retransmissions. This approach enhances network efficiency by reducing unnecessary retransmissions while ensuring robust communication links.
6. The one or more CRM of claim 1 , wherein the instructions are to further cause the UE to increment the BFD counter each time a quality measurement on an RS from the list of downlink RSs of the first candidate beam associated with the BWP falls below a predetermined threshold.
This invention relates to wireless communication systems, specifically to beam failure detection (BFD) mechanisms in user equipment (UE) for identifying and recovering from beam failures in a cellular network. The problem addressed is the need for reliable and efficient detection of beam failures to maintain communication quality in scenarios where the downlink signal quality degrades due to beam misalignment or interference. The invention involves a user equipment (UE) configured to monitor the quality of reference signals (RS) from a list of downlink reference signals associated with a candidate beam in a bandwidth part (BWP). The UE includes a processor and memory storing instructions that, when executed, cause the UE to increment a beam failure detection (BFD) counter each time a quality measurement of a reference signal from the candidate beam falls below a predetermined threshold. This counter is used to determine when a beam failure has occurred, triggering recovery procedures. The system ensures that the UE can detect and respond to beam failures promptly, improving communication reliability in dynamic wireless environments. The invention may also include additional features, such as adjusting the BFD counter based on multiple quality measurements or integrating with higher-layer protocols for beam recovery. The solution enhances the robustness of beam management in 5G and other advanced wireless networks.
7. The one or more CRM of claim 1 , wherein the instructions are to further cause the UE to encode the beam failure declaration for transmission to a next-generation Node B.
A system and method for managing beam failure in wireless communication networks, particularly in fifth-generation (5G) New Radio (NR) systems, addresses the challenge of maintaining reliable communication links when beam-based transmissions experience degradation or failure. The system involves a user equipment (UE) device configured to monitor the quality of downlink reference signals, such as channel state information reference signals (CSI-RS) or synchronization signal blocks (SSB), to detect beam failure conditions. Upon detecting a beam failure, the UE generates a beam failure declaration and encodes it for transmission to a next-generation Node B (gNB), the base station in 5G NR networks. The beam failure declaration may include information about the failed beam and may trigger a beam recovery procedure, such as initiating a random access channel (RACH) process to establish a new beam link. The system ensures robust communication by enabling the UE to quickly report beam failures and recover from link disruptions, improving overall network reliability and user experience. The solution is particularly relevant in high-frequency millimeter-wave (mmWave) deployments where beam-based communication is critical due to the susceptibility of beams to blockage and interference.
8. The one or more CRM of claim 1 , wherein the instructions are to further cause the UE to detect a second beam failure of a second candidate beam of the one or more candidate beams in a second one of the plurality of active bandwidth parts (BWPs) based on a second beam failure detection (BFD) counter associated with the second active BWP.
This invention relates to wireless communication systems, specifically beam failure detection and recovery in cellular networks using multiple active bandwidth parts (BWPs). The problem addressed is ensuring reliable communication when a user equipment (UE) experiences beam failures across different BWPs, which can disrupt data transmission and control signaling. The invention involves a user equipment (UE) configured to monitor one or more candidate beams across multiple active BWPs. The UE detects a beam failure of a primary candidate beam in a first active BWP based on a beam failure detection (BFD) counter associated with that BWP. If the primary beam fails, the UE selects an alternative candidate beam from the same BWP for recovery. Additionally, the UE can detect a second beam failure of a second candidate beam in a second active BWP based on a separate BFD counter linked to that BWP. This allows the UE to independently manage beam failures across different BWPs, ensuring continuous connectivity even if one BWP experiences issues. The system improves resilience by maintaining multiple candidate beams and BWPs, reducing the risk of communication disruptions in dynamic wireless environments.
9. The one or more CRM of claim 8 wherein the instructions are further to cause the UE to increment the second BFD counter upon detection of an instance of the second beam failure in the associated second active BWP.
This invention relates to beam failure detection (BFD) in wireless communication systems, specifically for user equipment (UE) operating in multiple active bandwidth parts (BWPs). The problem addressed is the need for accurate and efficient tracking of beam failures across different BWPs to ensure reliable communication. In wireless networks, beam failures can occur when the quality of the communication link degrades, and detecting these failures is critical for maintaining service continuity. The invention provides a method for managing beam failure detection counters in a UE that operates in multiple BWPs simultaneously. The UE includes a control resource management (CRM) module that monitors beam failures in each active BWP. When a beam failure is detected in a first active BWP, a first BFD counter is incremented. Similarly, when a beam failure is detected in a second active BWP, a second BFD counter is incremented. This allows the UE to independently track beam failures in each BWP, ensuring that corrective actions can be taken for each BWP as needed. The invention ensures that beam failure detection is handled efficiently, even when the UE is operating in multiple BWPs, thereby improving communication reliability. The CRM module may also include additional logic to manage beam failure recovery procedures based on the counter values.
10. A user equipment (UE), comprising: processing circuitry to: decode an information element from a radio resource control (RRC) message, wherein the information element includes configuration information for one or more candidate beams for beam failure recovery in case of beam failure detection, and the configuration information includes a list of downlink reference signals (RS) of the one or more candidate beams, detect a beam failure of a first candidate beam of the one or more candidate beams in at least one of a plurality of active bandwidth parts (BWPs) based on a beam failure detection (BFD) counter associated with the at least one active BWP, and declare, upon detection, the beam failure instance; and a memory interface to store the received RRC message, wherein a first downlink RS instance and a second downlink RS instance of the at least one downlink RS define a RS periodicity, and wherein a beam failure detection (BFD) period is less than the RS periodicity, and wherein the processing circuitry is configured to detect the beam failure based on a quality of at least a downlink RS instance most recent to the BFD period and based on no downlink RS instance falling within the BFD period.
This invention relates to wireless communication systems, specifically beam failure recovery in 5G or similar networks. The problem addressed is ensuring reliable beam failure detection and recovery when a user equipment (UE) loses communication with a serving base station due to beam misalignment or obstruction. The solution involves a UE configured to monitor candidate beams for potential failures and trigger recovery procedures when a failure is detected. The UE receives configuration information via a radio resource control (RRC) message, which includes a list of downlink reference signals (RS) associated with candidate beams for beam failure recovery. The UE monitors these beams across active bandwidth parts (BWPs) and uses a beam failure detection (BFD) counter to track potential failures. If a beam failure is detected in a first candidate beam, the UE declares the failure instance. The RS instances define a periodicity, and the BFD period is shorter than this RS periodicity. The UE detects a beam failure based on the quality of the most recent RS instance relative to the BFD period, even if no RS instance falls within the BFD period itself. This ensures timely detection and recovery without waiting for the next scheduled RS transmission. The configuration and detection logic are stored in the UE's memory for efficient processing.
11. The UE of claim 10 , wherein the processing circuitry is to further increment the BFD counter upon detection of an instance of the beam failure in the associated at least one active BWP.
This invention relates to wireless communication systems, specifically to beam failure detection (BFD) in user equipment (UE) operating in a 5G New Radio (NR) network. The problem addressed is the need for efficient and accurate beam failure detection in scenarios where multiple beam failure instances occur within a single active bandwidth part (BWP). Traditional methods may not adequately track repeated beam failures, leading to potential communication disruptions. The UE includes processing circuitry configured to detect beam failures in an active BWP and increment a BFD counter each time a beam failure is detected. The counter tracks the number of beam failures within the active BWP, allowing the UE to determine when a threshold is reached, triggering a beam failure recovery (BFR) procedure. The processing circuitry also increments the counter upon detecting additional beam failures in the same BWP, ensuring continuous monitoring and response to persistent beam issues. This mechanism improves reliability by ensuring timely recovery actions when beam failures recur within the same BWP, maintaining stable communication links. The solution is particularly useful in dynamic environments where beam quality fluctuates, such as in high-mobility scenarios or dense network deployments.
12. The UE of claim 11 , wherein the processing circuitry is to further declare the beam failure upon the BFD counter reaching a predetermined maximum count.
This invention relates to wireless communication systems, specifically to user equipment (UE) handling beam failure detection (BFD) in millimeter-wave (mmWave) or other high-frequency networks. The problem addressed is ensuring reliable communication when a UE loses synchronization with its serving base station due to beam misalignment or blockage, which can disrupt data transmission. The UE includes processing circuitry configured to monitor the quality of communication beams between the UE and the base station. If the signal quality of the active beam falls below a predefined threshold, the UE initiates a beam failure detection (BFD) procedure. This involves incrementing a BFD counter each time a signal quality check fails. The UE then declares a beam failure when the BFD counter reaches a predetermined maximum count, indicating persistent beam degradation. Upon detecting a beam failure, the UE may trigger a beam recovery process, such as searching for a new beam or requesting a beam switch from the base station. The invention ensures robust communication by proactively detecting and responding to beam failures, minimizing service interruptions in high-frequency wireless networks. The BFD counter mechanism provides a configurable threshold to balance between quick failure detection and avoiding false positives. This solution is particularly useful in environments where beam blockage or interference is common, such as urban or indoor settings.
13. The UE of claim 12 , wherein the processing circuitry is to decode the predetermined maximum count from the RRC message or another RRC message.
In wireless communication systems, user equipment (UE) devices must efficiently manage radio resource control (RRC) signaling to optimize performance and resource utilization. A key challenge is ensuring that UEs correctly interpret and apply configuration parameters received from the network, particularly those related to counting or limiting operations. This invention addresses the need for UEs to accurately decode and utilize a predetermined maximum count value, which may be transmitted in an RRC message or another RRC message. The UE includes processing circuitry configured to decode this maximum count value from the received RRC signaling. This allows the UE to enforce limits on certain operations, such as retransmissions or resource requests, based on the decoded value. The processing circuitry may also handle additional RRC messages to retrieve or update the maximum count value as needed. By dynamically adjusting this parameter, the network can control UE behavior to improve efficiency and reduce unnecessary signaling overhead. The invention ensures that UEs correctly interpret and apply the maximum count value, preventing misconfigurations and enhancing overall system performance.
14. The UE of claim 13 , wherein the processing circuitry is to decode the predetermined maximum count from a second information element in the RRC message or another RRC message.
In wireless communication systems, user equipment (UE) devices must efficiently manage radio resource control (RRC) signaling to optimize performance and resource utilization. A challenge arises when UEs need to determine the maximum number of retransmissions allowed for certain procedures, as this information may not be explicitly provided or may be embedded in complex signaling structures. This can lead to inefficiencies, such as unnecessary retransmissions or resource wastage. To address this, a UE is configured with processing circuitry that decodes a predetermined maximum count of retransmissions from a second information element (IE) within an RRC message or another RRC message. The UE uses this decoded value to control retransmission behavior, ensuring compliance with network constraints while optimizing resource usage. The processing circuitry may also handle other RRC-related functions, such as interpreting additional IEs or managing signaling procedures, to enhance communication reliability and efficiency. By dynamically obtaining the maximum retransmission count from dedicated IEs, the UE avoids hard-coded limits and adapts to varying network conditions, improving overall system performance. This approach streamlines RRC signaling and reduces the risk of misconfigurations or excessive retransmissions, benefiting both the UE and the network infrastructure.
15. The UE of claim 10 , wherein the processing circuitry is to further increment the BFD counter each time a quality measurement on an RS from the list of downlink RSs of the first candidate beam associated with the BWP falls below a predetermined threshold.
This invention relates to beam failure detection (BFD) in wireless communication systems, specifically for user equipment (UE) operating in a 5G or similar network. The problem addressed is improving the accuracy and reliability of beam failure detection by dynamically adjusting a BFD counter based on radio signal quality measurements. The UE monitors a set of downlink reference signals (RSs) associated with a candidate beam on a bandwidth part (BWP). The processing circuitry in the UE increments a BFD counter each time a quality measurement of a reference signal from this set falls below a predetermined threshold. This mechanism ensures that the BFD counter reflects not just a single failure event but cumulative degradation in signal quality, providing a more robust indication of beam failure. The UE may also compare the BFD counter to a predefined threshold to determine whether a beam failure has occurred. If the counter exceeds this threshold, the UE may trigger a beam failure recovery procedure, such as switching to an alternative beam or reporting the failure to the network. The invention enhances the reliability of beam failure detection by accounting for gradual signal degradation rather than relying solely on instantaneous measurements. This approach reduces false positives and ensures timely recovery when signal quality deteriorates.
16. The UE of claim 10 , wherein the processing circuitry is to further encode the beam failure declaration for transmission to a next-generation Node B.
This invention relates to wireless communication systems, specifically addressing beam failure recovery in fifth-generation (5G) New Radio (NR) networks. The problem solved is the efficient and reliable declaration of beam failure between a user equipment (UE) and a next-generation Node B (gNB) to maintain communication continuity when the current beam link degrades or fails. The UE includes processing circuitry configured to detect beam failure by monitoring reference signals, such as channel state information reference signals (CSI-RS) or synchronization signal blocks (SSBs), from the gNB. Upon detecting a beam failure, the processing circuitry generates a beam failure declaration message. This message is then encoded for transmission to the gNB, enabling the network to initiate beam recovery procedures, such as switching to a backup beam or reconfiguring the communication link. The processing circuitry may also handle additional tasks, such as selecting a suitable backup beam or managing timing constraints for beam failure recovery. The encoded beam failure declaration ensures low-latency transmission, minimizing service interruptions. This solution improves reliability in high-mobility or obstructed environments where beam stability is critical. The invention enhances 5G NR systems by providing a robust mechanism for beam failure detection and recovery, ensuring seamless connectivity.
17. The UE of claim 10 , wherein the processing circuitry is further configured to detect a second beam failure of a second candidate beam of the one or more candidate beams in a second one of the plurality of active bandwidth parts (BWPs) based on a second beam failure detection (BFD) counter associated with the second active BWP.
This invention relates to wireless communication systems, specifically to user equipment (UE) handling beam failure detection (BFD) across multiple active bandwidth parts (BWPs). The problem addressed is ensuring reliable communication when a primary beam fails, by efficiently detecting and recovering from beam failures in secondary beams across different BWPs. The UE monitors one or more candidate beams in multiple active BWPs. For each BWP, a dedicated BFD counter tracks beam failure events. If a beam failure is detected in a primary beam, the UE switches to a secondary candidate beam within the same BWP. If a second beam failure occurs in a secondary candidate beam of another BWP, the UE detects this failure using a separate BFD counter specific to that BWP. This allows the UE to independently manage beam reliability across different BWPs, ensuring continuous communication even if multiple beams fail. The system improves robustness by isolating beam failure detection per BWP, preventing cascading failures and maintaining service continuity.
18. The UE of claim 17 , wherein the processing circuitry is further configured to increment the second BFD counter upon detection of an instance of the second beam failure in the associated second active BWP.
In wireless communication systems, particularly in 5G and beyond, maintaining reliable communication links is critical, especially when using beamforming techniques. Beam failure detection (BFD) is essential for identifying when a communication link degrades or fails, allowing the user equipment (UE) to request a beam recovery procedure. However, managing multiple beam failure instances across different bandwidth parts (BWPs) can be challenging, as the UE must track failures independently for each active BWP to ensure proper recovery actions. This invention addresses the need for efficient beam failure tracking in a UE that operates with multiple active BWPs. The UE includes processing circuitry configured to monitor and detect beam failures in each active BWP. Specifically, the circuitry maintains separate counters for each BWP to track the number of beam failure instances. When a beam failure is detected in a particular BWP, the corresponding counter for that BWP is incremented. This allows the UE to distinguish between failures in different BWPs and take appropriate recovery actions, such as initiating a beam failure recovery request for the affected BWP while maintaining communication on other BWPs. The separate counters ensure that beam failure events are accurately logged and processed without interference between different BWPs, improving reliability and reducing unnecessary recovery procedures. This approach is particularly useful in scenarios where the UE operates with multiple active BWPs, such as in carrier aggregation or multi-band communication.
19. A method of operating a user equipment (UE), comprising: decoding an information element from a radio resource control (RRC) message, wherein the information element includes configuration information for one or more candidate beams for beam failure recovery in case of beam failure detection, and the configuration information includes a list of downlink reference signals (RSs) of the one or more candidate beams, detecting, based on at least one downlink reference signal (RS), a beam failure of a first candidate beam of the one or more candidate beams in at least one of a plurality of active bandwidth parts (BWPs) based on a beam failure detection (BFD) counter associated with the at least one active BWP, and declaring, upon detection, the beam failure, wherein a first downlink RS instance and a second downlink RS instance of the at least one downlink RS define a RS periodicity, and wherein a beam failure detection (BFD) period is less than the RS periodicity, and wherein the beam failure instance is detected based on a quality of at least a downlink RS instance most recent to the BFD period and based on no downlink RS instance falling within the BFD period.
This invention relates to wireless communication systems, specifically beam failure recovery in user equipment (UE) for maintaining reliable communication links. The problem addressed is the detection and recovery from beam failures in scenarios where downlink reference signals (RSs) are used to monitor beam quality, particularly in systems with multiple active bandwidth parts (BWPs). The method involves decoding an information element from a radio resource control (RRC) message, which provides configuration details for candidate beams used in beam failure recovery. This configuration includes a list of downlink RSs associated with the candidate beams. The UE monitors these RSs to detect beam failures. If a beam failure is detected in a first candidate beam within at least one active BWP, the UE declares the failure. Detection is based on a beam failure detection (BFD) counter linked to the active BWP. The BFD process uses two RS instances—a first and a second—to define a periodicity. The BFD period is shorter than this RS periodicity. A beam failure is declared if the most recent RS instance within the BFD period fails quality checks and no RS instances fall within the BFD period. This ensures timely detection and recovery, improving communication reliability in dynamic wireless environments.
20. The method of claim 19 , further comprising incrementing the BFD counter upon detection of an instance of the beam failure in the associated at least one active BWP.
In wireless communication systems, beam failure detection (BFD) is critical for maintaining reliable connections, especially in millimeter-wave (mmWave) and other high-frequency bands where beam alignment is essential. Beam failures can occur due to blockages, mobility, or environmental changes, leading to degraded performance or dropped connections. Existing solutions rely on detecting beam failures and triggering recovery procedures, but they often lack mechanisms to track the frequency or severity of these failures, which could inform network optimization or adaptive beam management strategies. This invention addresses the need for improved beam failure monitoring by introducing a method that includes incrementing a beam failure detection (BFD) counter upon detecting a beam failure in an active bandwidth part (BWP). The BFD counter is associated with the active BWP where the failure occurs, allowing the system to track the number of failures per BWP. This tracking enables the network or device to assess the reliability of different BWPs, potentially triggering adjustments such as BWP switching, beam reconfiguration, or other corrective actions. The method may also involve resetting the counter under certain conditions, such as successful beam recovery or periodic intervals, to ensure accurate monitoring. By quantifying beam failures, the system can improve link stability and optimize resource allocation in dynamic wireless environments.
21. The method of claim 20 , further comprising declaring the beam failure upon the BFD counter reaching a predetermined maximum count.
A method for wireless communication involves monitoring beam failure detection (BFD) in a wireless network. The method includes tracking a BFD counter that increments when beam failure conditions are detected. The counter is reset when beam failure conditions are no longer present. The method further includes declaring a beam failure when the BFD counter reaches a predetermined maximum count. This ensures reliable detection of beam failures by preventing premature declarations while allowing timely identification of persistent beam failures. The method is applicable in wireless communication systems where maintaining stable beam connections is critical, such as in millimeter-wave or high-frequency networks. The approach helps mitigate signal degradation and improves network reliability by triggering corrective actions when beam failures are confirmed. The predetermined maximum count can be configured based on system requirements, balancing sensitivity and robustness in beam failure detection.
22. The method of claim 21 , wherein the predetermined maximum count is included in the RRC message or another RRC message.
A method for managing wireless communication involves dynamically adjusting a maximum count of retransmission attempts for a radio resource control (RRC) message in a wireless network. The method addresses the problem of inefficient resource utilization and potential delays in communication due to excessive retransmissions or insufficient retransmission attempts. The method includes determining a predetermined maximum count of retransmission attempts for an RRC message and dynamically adjusting this count based on network conditions, such as signal quality, congestion, or device capabilities. The predetermined maximum count is included in the RRC message itself or in another RRC message, allowing the network to communicate the retransmission limit to the device. This ensures that the device adheres to the specified retransmission limit, optimizing resource usage and improving communication efficiency. The method may also involve monitoring the retransmission attempts and adjusting the count in real-time to adapt to changing network conditions. This dynamic adjustment helps balance reliability and efficiency in wireless communication.
23. The method of claim 19 , further comprising incrementing the BFD counter each time a quality measurement on an RS from the list of downlink RSs of the first candidate beam associated with the BWP falls below a predetermined threshold.
In wireless communication systems, beam failure detection (BFD) is critical for maintaining reliable connections, especially in millimeter-wave (mmWave) environments where beam misalignment can lead to signal degradation. The invention addresses the challenge of accurately detecting beam failures by enhancing the BFD process with a counter-based mechanism. The method involves monitoring the quality of reference signals (RS) from a list of downlink reference signals associated with a candidate beam in a bandwidth part (BWP). When the quality measurement of any RS in this list falls below a predetermined threshold, a BFD counter is incremented. This counter tracks the frequency of quality degradation events, providing a more robust indication of beam failure. The method ensures that transient signal fluctuations do not trigger false beam failure detections, improving the reliability of beam management in dynamic wireless environments. The counter-based approach allows for configurable sensitivity, enabling adaptive beam failure detection based on network conditions. This solution is particularly useful in scenarios where rapid beam switching or environmental interference could otherwise lead to inaccurate failure detection.
24. The method of claim 19 , further comprising encoding the beam failure declaration for transmission to a next-generation Node B.
A method for wireless communication involves detecting a beam failure in a wireless network, where a user device monitors reference signals from a network node to determine if a beam link has degraded beyond a threshold. Upon detecting a beam failure, the user device declares the failure and encodes this declaration for transmission to a next-generation Node B (gNB). The encoded beam failure declaration includes information about the failed beam and may trigger a recovery procedure, such as beam reconfiguration or handover. The method ensures reliable communication by promptly reporting beam failures to the network, allowing the gNB to take corrective actions. The encoding step ensures the declaration is transmitted efficiently and accurately, minimizing disruptions in the wireless link. This approach is particularly useful in high-frequency millimeter-wave networks, where beam stability is critical due to susceptibility to blockages and interference. The method may also involve selecting an alternative beam or signaling the failure through a control channel to expedite recovery. The overall system enhances network robustness by maintaining communication quality in dynamic environments.
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December 15, 2020
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